https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84630
David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-03-01
CC| |dmalcolm at gcc dot gnu.org
Target Milestone|--- |6.5
Summary|internal compiler error: |[6/7/8 Regression] ICE:
|tree check: expected class |TYPE_NAME() used on
|'type', have 'exceptional' |error_mark_node in
|(error_mark) in |tsubst_lambda_expr, at
|tsubst_lambda_expr, at |cp/pt.c:17141
|cp/pt.c:17141 |
Ever confirmed|0 |1
--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed with trunk, 7, 6 (and 5). Doesn't crash with 4.8.3.
ICE began on this code (with -std=c++11) between r198776 (no ICE) and r198781,
with:
"unexpected expression ‘<enumerator>’ of kind template_parm_index")
The ICE message changed to
"tree check: expected class ‘type’, have ‘exceptional’ (error_mark) in
tsubst_lambda_expr, at cp/pt.c:16972"
sometime between r257193 and r257199 (probably in r257199).
Fails on trunk here:
#3 tsubst_lambda_expr (t=<lambda_expr 0x7ffff1a1c080>, args=<tree_vec
0x7ffff1a1ad00>, complain=1,
in_decl=<function_decl 0x7ffff1a09f00 operator()>) at
../../src/gcc/cp/pt.c:17141
17141 determine_visibility (TYPE_NAME (type));
where "type" is "error_mark_node" and thus not a type.
On unchecked builds (e.g. 7), this becomes:
#1 0x00000000007b8eea in cxx_eval_constant_expression(constexpr_ctx const*,
tree_node*, bool, bool*, bool*, tree_node**) ()
at ../../src/gcc/cp/constexpr.c:4654
4654 internal_error ("unexpected expression %qE of kind %s", t,
4655 get_tree_code_name (TREE_CODE (t)));
